./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:12:44,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:12:44,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:12:44,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:12:44,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:12:44,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:12:44,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:12:44,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:12:44,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:12:44,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:12:44,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:12:44,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:12:44,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:12:44,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:12:44,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:12:44,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:12:44,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:12:44,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:12:44,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:12:44,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:12:44,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:12:44,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:12:44,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:12:44,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:12:44,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:12:44,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:12:44,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:12:44,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:12:44,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:12:44,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:12:44,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:12:44,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:12:44,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:12:44,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:12:44,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:12:44,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:12:44,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:12:44,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:12:44,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:12:44,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:12:44,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:12:44,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:12:44,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:12:44,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:12:44,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:12:44,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:12:44,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:12:44,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:12:44,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:12:44,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:12:44,462 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:12:44,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:12:44,463 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:12:44,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:12:44,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:12:44,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:12:44,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:12:44,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:12:44,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:12:44,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:12:44,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:12:44,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:12:44,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:12:44,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:12:44,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:12:44,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:12:44,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:12:44,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:12:44,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:12:44,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:12:44,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:12:44,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:12:44,466 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:12:44,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:12:44,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:12:44,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:12:44,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2021-12-07 00:12:44,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:12:44,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:12:44,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:12:44,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:12:44,676 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:12:44,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-12-07 00:12:44,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data/bb0f71658/4d68936db6ec4a2abd5755b654addc6e/FLAG797d4d65b [2021-12-07 00:12:45,090 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:12:45,091 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-12-07 00:12:45,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data/bb0f71658/4d68936db6ec4a2abd5755b654addc6e/FLAG797d4d65b [2021-12-07 00:12:45,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data/bb0f71658/4d68936db6ec4a2abd5755b654addc6e [2021-12-07 00:12:45,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:12:45,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:12:45,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:12:45,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:12:45,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:12:45,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a0e360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45, skipping insertion in model container [2021-12-07 00:12:45,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:12:45,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:12:45,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-12-07 00:12:45,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-12-07 00:12:45,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:12:45,266 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:12:45,282 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-12-07 00:12:45,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-12-07 00:12:45,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:12:45,294 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:12:45,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45 WrapperNode [2021-12-07 00:12:45,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:12:45,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:12:45,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:12:45,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:12:45,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,322 INFO L137 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107 [2021-12-07 00:12:45,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:12:45,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:12:45,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:12:45,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:12:45,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:12:45,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:12:45,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:12:45,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:12:45,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (1/1) ... [2021-12-07 00:12:45,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:12:45,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:12:45,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:12:45,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-12-07 00:12:45,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-12-07 00:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-12-07 00:12:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-12-07 00:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-07 00:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:12:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:12:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:12:45,470 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:12:45,471 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:12:45,617 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:12:45,622 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:12:45,622 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 00:12:45,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:12:45 BoogieIcfgContainer [2021-12-07 00:12:45,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:12:45,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:12:45,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:12:45,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:12:45,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:12:45" (1/3) ... [2021-12-07 00:12:45,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6684b21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:12:45, skipping insertion in model container [2021-12-07 00:12:45,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:45" (2/3) ... [2021-12-07 00:12:45,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6684b21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:12:45, skipping insertion in model container [2021-12-07 00:12:45,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:12:45" (3/3) ... [2021-12-07 00:12:45,632 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-12-07 00:12:45,637 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:12:45,637 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-07 00:12:45,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:12:45,680 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:12:45,680 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-07 00:12:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 44 states have internal predecessors, (61), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-07 00:12:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 00:12:45,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:45,708 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:45,708 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash -625969503, now seen corresponding path program 1 times [2021-12-07 00:12:45,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:45,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770637631] [2021-12-07 00:12:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:45,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:12:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:12:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:45,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:12:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:12:45,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:45,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770637631] [2021-12-07 00:12:45,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770637631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:45,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:45,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:12:45,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605954441] [2021-12-07 00:12:45,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:45,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:12:45,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:45,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:12:45,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:45,955 INFO L87 Difference]: Start difference. First operand has 57 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 44 states have internal predecessors, (61), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:12:46,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:46,050 INFO L93 Difference]: Finished difference Result 108 states and 156 transitions. [2021-12-07 00:12:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:12:46,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-12-07 00:12:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:46,059 INFO L225 Difference]: With dead ends: 108 [2021-12-07 00:12:46,059 INFO L226 Difference]: Without dead ends: 62 [2021-12-07 00:12:46,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:12:46,064 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 19 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:46,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 259 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:12:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-07 00:12:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2021-12-07 00:12:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 42 states have internal predecessors, (54), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-07 00:12:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2021-12-07 00:12:46,098 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 28 [2021-12-07 00:12:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:46,098 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2021-12-07 00:12:46,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:12:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2021-12-07 00:12:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 00:12:46,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:46,101 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:46,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:12:46,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:46,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 716059, now seen corresponding path program 1 times [2021-12-07 00:12:46,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:46,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951091916] [2021-12-07 00:12:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:46,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:12:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:12:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:12:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:12:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 00:12:46,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:46,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951091916] [2021-12-07 00:12:46,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951091916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:46,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:46,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:12:46,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025224383] [2021-12-07 00:12:46,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:46,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:12:46,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:12:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:46,218 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:46,271 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2021-12-07 00:12:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:12:46,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2021-12-07 00:12:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:46,274 INFO L225 Difference]: With dead ends: 79 [2021-12-07 00:12:46,274 INFO L226 Difference]: Without dead ends: 59 [2021-12-07 00:12:46,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:46,276 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:46,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 243 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-07 00:12:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-07 00:12:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-07 00:12:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2021-12-07 00:12:46,289 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 34 [2021-12-07 00:12:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:46,289 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2021-12-07 00:12:46,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2021-12-07 00:12:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 00:12:46,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:46,291 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:46,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:12:46,292 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:46,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash 840977401, now seen corresponding path program 1 times [2021-12-07 00:12:46,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:46,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904140943] [2021-12-07 00:12:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:46,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:12:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:12:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:12:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:12:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 00:12:46,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:46,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904140943] [2021-12-07 00:12:46,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904140943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:46,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:46,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:12:46,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2867652] [2021-12-07 00:12:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:46,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:12:46,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:12:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:46,392 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:46,433 INFO L93 Difference]: Finished difference Result 83 states and 109 transitions. [2021-12-07 00:12:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:12:46,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2021-12-07 00:12:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:46,435 INFO L225 Difference]: With dead ends: 83 [2021-12-07 00:12:46,435 INFO L226 Difference]: Without dead ends: 63 [2021-12-07 00:12:46,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:46,436 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 3 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:46,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 259 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-07 00:12:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-12-07 00:12:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-07 00:12:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2021-12-07 00:12:46,444 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 35 [2021-12-07 00:12:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:46,445 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2021-12-07 00:12:46,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2021-12-07 00:12:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-07 00:12:46,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:46,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:46,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:12:46,446 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:46,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash -902959273, now seen corresponding path program 1 times [2021-12-07 00:12:46,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:46,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435950534] [2021-12-07 00:12:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:46,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:12:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:12:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:12:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:12:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 00:12:46,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:46,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435950534] [2021-12-07 00:12:46,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435950534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:46,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:46,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:12:46,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983901060] [2021-12-07 00:12:46,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:46,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:12:46,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:46,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:12:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:46,532 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:46,576 INFO L93 Difference]: Finished difference Result 83 states and 109 transitions. [2021-12-07 00:12:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:12:46,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2021-12-07 00:12:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:46,577 INFO L225 Difference]: With dead ends: 83 [2021-12-07 00:12:46,577 INFO L226 Difference]: Without dead ends: 63 [2021-12-07 00:12:46,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:46,579 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 3 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:46,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 259 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-07 00:12:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-12-07 00:12:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-07 00:12:46,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2021-12-07 00:12:46,585 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 36 [2021-12-07 00:12:46,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:46,586 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2021-12-07 00:12:46,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:46,586 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2021-12-07 00:12:46,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:12:46,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:46,587 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:46,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:12:46,587 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1658214444, now seen corresponding path program 1 times [2021-12-07 00:12:46,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:46,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665569923] [2021-12-07 00:12:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:46,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:12:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:12:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:12:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-07 00:12:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 00:12:46,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:46,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665569923] [2021-12-07 00:12:46,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665569923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:46,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:46,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:46,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547942839] [2021-12-07 00:12:46,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:46,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:12:46,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:46,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:12:46,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:46,635 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-07 00:12:46,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:46,666 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2021-12-07 00:12:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:12:46,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2021-12-07 00:12:46,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:46,667 INFO L225 Difference]: With dead ends: 62 [2021-12-07 00:12:46,667 INFO L226 Difference]: Without dead ends: 60 [2021-12-07 00:12:46,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:46,669 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 3 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:46,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 180 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:46,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-07 00:12:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-12-07 00:12:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-07 00:12:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2021-12-07 00:12:46,675 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 37 [2021-12-07 00:12:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:46,675 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2021-12-07 00:12:46,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-07 00:12:46,675 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2021-12-07 00:12:46,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-07 00:12:46,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:46,677 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:46,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:12:46,677 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:46,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1826594765, now seen corresponding path program 1 times [2021-12-07 00:12:46,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:46,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554375295] [2021-12-07 00:12:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:46,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:12:46,700 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:12:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:12:46,734 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:12:46,734 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 00:12:46,735 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-07 00:12:46,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-07 00:12:46,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:12:46,739 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-07 00:12:46,741 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:12:46,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:12:46 BoogieIcfgContainer [2021-12-07 00:12:46,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:12:46,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:12:46,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:12:46,766 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:12:46,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:12:45" (3/4) ... [2021-12-07 00:12:46,768 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-07 00:12:46,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:12:46,769 INFO L158 Benchmark]: Toolchain (without parser) took 1660.06ms. Allocated memory is still 94.4MB. Free memory was 59.1MB in the beginning and 38.4MB in the end (delta: 20.6MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-12-07 00:12:46,769 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:12:46,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.60ms. Allocated memory is still 94.4MB. Free memory was 58.8MB in the beginning and 70.1MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 00:12:46,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.87ms. Allocated memory is still 94.4MB. Free memory was 70.1MB in the beginning and 68.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:12:46,770 INFO L158 Benchmark]: Boogie Preprocessor took 20.43ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 67.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:12:46,770 INFO L158 Benchmark]: RCFGBuilder took 280.36ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 54.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-07 00:12:46,770 INFO L158 Benchmark]: TraceAbstraction took 1139.03ms. Allocated memory is still 94.4MB. Free memory was 53.8MB in the beginning and 38.7MB in the end (delta: 15.1MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2021-12-07 00:12:46,771 INFO L158 Benchmark]: Witness Printer took 2.67ms. Allocated memory is still 94.4MB. Free memory was 38.7MB in the beginning and 38.4MB in the end (delta: 231.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:12:46,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.60ms. Allocated memory is still 94.4MB. Free memory was 58.8MB in the beginning and 70.1MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.87ms. Allocated memory is still 94.4MB. Free memory was 70.1MB in the beginning and 68.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.43ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 67.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 280.36ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 54.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1139.03ms. Allocated memory is still 94.4MB. Free memory was 53.8MB in the beginning and 38.7MB in the end (delta: 15.1MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Witness Printer took 2.67ms. Allocated memory is still 94.4MB. Free memory was 38.7MB in the beginning and 38.4MB in the end (delta: 231.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 77]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L70] CALL, EXPR isnan_float(x) VAL [\old(x)=2139095043] [L59] return x != x; VAL [\old(x)=2139095043, \result=1, x=2139095043] [L70] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, x=2139095043] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, x=2139095043] [L70] CALL, EXPR isnan_float(y) VAL [\old(x)=2139095042] [L59] return x != x; VAL [\old(x)=2139095042, \result=0, x=2139095042] [L70] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=2139095043, y=2139095042] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=2139095043, y=2139095042] [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=2139095043, y=2139095042] [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L73] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043] [L15] __uint32_t w; VAL [\old(x)=2139095043, x=2139095043] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; VAL [\old(x)=2139095043, \result=0, w=2139095041, x=2139095043] [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043, \old(y)=2139095042, __fpclassify_float(x)=0, x=2139095043, y=2139095042] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=2139095043, \old(y)=2139095042, \result=2139095042, x=2139095043, y=2139095042] [L73] RET, EXPR fmin_float(x, y) [L73] float res = fmin_float(x, y); [L76] CALL, EXPR isnan_float(x) VAL [\old(x)=2139095043] [L59] return x != x; VAL [\old(x)=2139095043, \result=1, x=2139095043] [L76] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, res=2139095042, x=2139095043, y=2139095042] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, res=2139095042, x=2139095043, y=2139095042] [L76] CALL, EXPR isnan_float(y) VAL [\old(x)=2139095042] [L59] return x != x; VAL [\old(x)=2139095042, \result=0, x=2139095042] [L76] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=2139095042, x=2139095043, y=2139095042] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=2139095042, x=2139095043, y=2139095042] [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() VAL [res=2139095042, x=2139095043, y=2139095042] - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 57 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 1200 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 835 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 157 IncrementalHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 365 mSDtfsCounter, 157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=5, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 39/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-07 00:12:46,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:12:48,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:12:48,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:12:48,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:12:48,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:12:48,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:12:48,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:12:48,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:12:48,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:12:48,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:12:48,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:12:48,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:12:48,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:12:48,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:12:48,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:12:48,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:12:48,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:12:48,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:12:48,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:12:48,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:12:48,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:12:48,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:12:48,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:12:48,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:12:48,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:12:48,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:12:48,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:12:48,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:12:48,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:12:48,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:12:48,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:12:48,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:12:48,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:12:48,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:12:48,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:12:48,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:12:48,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:12:48,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:12:48,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:12:48,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:12:48,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:12:48,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-07 00:12:48,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:12:48,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:12:48,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:12:48,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:12:48,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:12:48,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:12:48,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:12:48,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:12:48,595 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:12:48,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:12:48,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:12:48,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:12:48,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:12:48,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:12:48,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:12:48,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:12:48,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 00:12:48,596 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-07 00:12:48,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-07 00:12:48,596 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:12:48,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:12:48,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:12:48,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:12:48,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:12:48,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:12:48,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:12:48,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:12:48,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:12:48,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:12:48,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:12:48,598 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-07 00:12:48,598 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-07 00:12:48,598 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:12:48,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:12:48,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:12:48,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:12:48,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-07 00:12:48,599 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2021-12-07 00:12:48,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:12:48,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:12:48,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:12:48,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:12:48,848 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:12:48,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-12-07 00:12:48,895 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data/fb3b9c496/f33cc2aa781049fbb4efbb416787d510/FLAG9dd9f1bc3 [2021-12-07 00:12:49,275 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:12:49,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-12-07 00:12:49,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data/fb3b9c496/f33cc2aa781049fbb4efbb416787d510/FLAG9dd9f1bc3 [2021-12-07 00:12:49,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/data/fb3b9c496/f33cc2aa781049fbb4efbb416787d510 [2021-12-07 00:12:49,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:12:49,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:12:49,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:12:49,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:12:49,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:12:49,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46430753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49, skipping insertion in model container [2021-12-07 00:12:49,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:12:49,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:12:49,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-12-07 00:12:49,445 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-12-07 00:12:49,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:12:49,455 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:12:49,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-12-07 00:12:49,486 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-12-07 00:12:49,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:12:49,501 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:12:49,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49 WrapperNode [2021-12-07 00:12:49,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:12:49,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:12:49,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:12:49,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:12:49,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,536 INFO L137 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2021-12-07 00:12:49,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:12:49,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:12:49,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:12:49,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:12:49,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:12:49,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:12:49,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:12:49,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:12:49,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (1/1) ... [2021-12-07 00:12:49,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:12:49,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:12:49,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:12:49,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:12:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:12:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-07 00:12:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:12:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-12-07 00:12:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-12-07 00:12:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-12-07 00:12:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-12-07 00:12:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-07 00:12:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:12:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:12:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-07 00:12:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:12:49,698 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:12:49,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:12:49,852 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:12:49,858 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:12:49,858 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 00:12:49,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:12:49 BoogieIcfgContainer [2021-12-07 00:12:49,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:12:49,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:12:49,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:12:49,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:12:49,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:12:49" (1/3) ... [2021-12-07 00:12:49,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bfca27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:12:49, skipping insertion in model container [2021-12-07 00:12:49,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:49" (2/3) ... [2021-12-07 00:12:49,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bfca27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:12:49, skipping insertion in model container [2021-12-07 00:12:49,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:12:49" (3/3) ... [2021-12-07 00:12:49,868 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-12-07 00:12:49,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:12:49,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-07 00:12:49,923 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:12:49,929 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:12:49,929 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-07 00:12:49,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 40 states have (on average 1.475) internal successors, (59), 42 states have internal predecessors, (59), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-07 00:12:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-07 00:12:49,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:49,952 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:49,952 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash 956195031, now seen corresponding path program 1 times [2021-12-07 00:12:49,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:49,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239694710] [2021-12-07 00:12:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:49,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:49,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:49,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:49,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-07 00:12:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:50,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 00:12:50,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:50,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:50,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:50,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239694710] [2021-12-07 00:12:50,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239694710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:50,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:50,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:12:50,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128290423] [2021-12-07 00:12:50,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:50,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:12:50,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:50,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:12:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:12:50,143 INFO L87 Difference]: Start difference. First operand has 55 states, 40 states have (on average 1.475) internal successors, (59), 42 states have internal predecessors, (59), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:12:50,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:50,163 INFO L93 Difference]: Finished difference Result 93 states and 134 transitions. [2021-12-07 00:12:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:12:50,165 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-12-07 00:12:50,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:50,171 INFO L225 Difference]: With dead ends: 93 [2021-12-07 00:12:50,171 INFO L226 Difference]: Without dead ends: 51 [2021-12-07 00:12:50,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:12:50,178 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:50,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:50,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-07 00:12:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-07 00:12:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 38 states have internal predecessors, (50), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-07 00:12:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2021-12-07 00:12:50,218 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 27 [2021-12-07 00:12:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:50,219 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2021-12-07 00:12:50,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:12:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2021-12-07 00:12:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 00:12:50,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:50,222 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:50,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:12:50,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:50,423 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1128254016, now seen corresponding path program 1 times [2021-12-07 00:12:50,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:50,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630486235] [2021-12-07 00:12:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:50,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:50,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:50,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:50,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-07 00:12:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:50,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:12:50,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:50,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:50,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:50,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630486235] [2021-12-07 00:12:50,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630486235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:50,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:50,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:50,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635081445] [2021-12-07 00:12:50,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:50,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:12:50,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:50,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:12:50,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:50,537 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:12:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:50,574 INFO L93 Difference]: Finished difference Result 96 states and 131 transitions. [2021-12-07 00:12:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:12:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-12-07 00:12:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:50,576 INFO L225 Difference]: With dead ends: 96 [2021-12-07 00:12:50,577 INFO L226 Difference]: Without dead ends: 60 [2021-12-07 00:12:50,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:50,578 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 16 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:50,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 192 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-07 00:12:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-12-07 00:12:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 40 states have internal predecessors, (52), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-07 00:12:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2021-12-07 00:12:50,587 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 72 transitions. Word has length 28 [2021-12-07 00:12:50,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:50,587 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 72 transitions. [2021-12-07 00:12:50,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:12:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 72 transitions. [2021-12-07 00:12:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:12:50,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:50,589 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:50,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-07 00:12:50,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:50,791 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash 987158491, now seen corresponding path program 1 times [2021-12-07 00:12:50,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:50,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159042364] [2021-12-07 00:12:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:50,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:50,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:50,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:50,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-07 00:12:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:50,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:12:50,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:12:50,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:50,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:50,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159042364] [2021-12-07 00:12:50,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159042364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:50,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:50,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:50,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366311060] [2021-12-07 00:12:50,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:50,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:12:50,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:50,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:12:50,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:50,928 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:50,947 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2021-12-07 00:12:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:12:50,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-12-07 00:12:50,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:50,949 INFO L225 Difference]: With dead ends: 76 [2021-12-07 00:12:50,949 INFO L226 Difference]: Without dead ends: 56 [2021-12-07 00:12:50,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:50,951 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:50,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-07 00:12:50,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-07 00:12:50,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 42 states have internal predecessors, (54), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-07 00:12:50,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2021-12-07 00:12:50,958 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 33 [2021-12-07 00:12:50,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:50,959 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-12-07 00:12:50,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2021-12-07 00:12:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 00:12:50,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:50,960 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:50,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-07 00:12:51,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:51,163 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash 871427583, now seen corresponding path program 1 times [2021-12-07 00:12:51,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:51,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212935691] [2021-12-07 00:12:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:51,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:51,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:51,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:51,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-07 00:12:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:51,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:12:51,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:12:51,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:51,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:51,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212935691] [2021-12-07 00:12:51,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212935691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:51,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:51,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:51,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718332103] [2021-12-07 00:12:51,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:51,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:12:51,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:51,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:12:51,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:51,274 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:51,293 INFO L93 Difference]: Finished difference Result 79 states and 105 transitions. [2021-12-07 00:12:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:12:51,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2021-12-07 00:12:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:51,295 INFO L225 Difference]: With dead ends: 79 [2021-12-07 00:12:51,295 INFO L226 Difference]: Without dead ends: 59 [2021-12-07 00:12:51,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:51,297 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:51,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:51,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-07 00:12:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-12-07 00:12:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 42 states have internal predecessors, (54), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-07 00:12:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2021-12-07 00:12:51,307 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 34 [2021-12-07 00:12:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:51,307 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-12-07 00:12:51,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2021-12-07 00:12:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 00:12:51,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:51,309 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:51,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-07 00:12:51,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:51,511 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:51,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:51,513 INFO L85 PathProgramCache]: Analyzing trace with hash 405124703, now seen corresponding path program 1 times [2021-12-07 00:12:51,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:51,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860455253] [2021-12-07 00:12:51,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:51,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:51,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:51,518 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:51,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-07 00:12:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:51,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:12:51,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:12:51,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:51,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:51,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860455253] [2021-12-07 00:12:51,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860455253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:51,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:51,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:51,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769790970] [2021-12-07 00:12:51,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:51,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:12:51,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:12:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:51,687 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:51,699 INFO L93 Difference]: Finished difference Result 79 states and 105 transitions. [2021-12-07 00:12:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:12:51,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2021-12-07 00:12:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:51,701 INFO L225 Difference]: With dead ends: 79 [2021-12-07 00:12:51,701 INFO L226 Difference]: Without dead ends: 59 [2021-12-07 00:12:51,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:51,702 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:51,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-07 00:12:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-12-07 00:12:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 42 states have internal predecessors, (54), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-07 00:12:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2021-12-07 00:12:51,708 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 35 [2021-12-07 00:12:51,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:51,708 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-12-07 00:12:51,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2021-12-07 00:12:51,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-07 00:12:51,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:51,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:51,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-07 00:12:51,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:51,911 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:51,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1955992579, now seen corresponding path program 1 times [2021-12-07 00:12:51,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:51,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615353674] [2021-12-07 00:12:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:51,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:51,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:51,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:51,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-07 00:12:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:51,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:12:51,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:12:52,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:52,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:52,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615353674] [2021-12-07 00:12:52,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615353674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:52,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:52,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:52,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557546743] [2021-12-07 00:12:52,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:52,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:12:52,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:52,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:12:52,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:52,036 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:52,048 INFO L93 Difference]: Finished difference Result 79 states and 105 transitions. [2021-12-07 00:12:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:12:52,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2021-12-07 00:12:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:52,050 INFO L225 Difference]: With dead ends: 79 [2021-12-07 00:12:52,050 INFO L226 Difference]: Without dead ends: 59 [2021-12-07 00:12:52,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:52,051 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:52,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-07 00:12:52,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-12-07 00:12:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 42 states have internal predecessors, (54), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-07 00:12:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2021-12-07 00:12:52,056 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 36 [2021-12-07 00:12:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:52,057 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-12-07 00:12:52,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:52,057 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2021-12-07 00:12:52,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-07 00:12:52,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:52,058 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:52,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-07 00:12:52,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:52,260 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1662589572, now seen corresponding path program 1 times [2021-12-07 00:12:52,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:52,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871449670] [2021-12-07 00:12:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:52,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:52,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:52,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:52,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-07 00:12:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:52,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:12:52,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:12:52,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:12:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:12:52,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:52,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871449670] [2021-12-07 00:12:52,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871449670] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:12:52,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:12:52,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-12-07 00:12:52,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324395701] [2021-12-07 00:12:52,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:12:52,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 00:12:52,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 00:12:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:12:52,761 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:12:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:53,221 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2021-12-07 00:12:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:12:53,222 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2021-12-07 00:12:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:53,224 INFO L225 Difference]: With dead ends: 102 [2021-12-07 00:12:53,224 INFO L226 Difference]: Without dead ends: 88 [2021-12-07 00:12:53,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:12:53,225 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 103 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:53,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 675 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 00:12:53,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-07 00:12:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 74. [2021-12-07 00:12:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 15 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2021-12-07 00:12:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-12-07 00:12:53,236 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 36 [2021-12-07 00:12:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:53,237 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-12-07 00:12:53,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:12:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2021-12-07 00:12:53,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-07 00:12:53,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:53,239 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:53,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-07 00:12:53,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:53,440 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2045835875, now seen corresponding path program 1 times [2021-12-07 00:12:53,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:53,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329093540] [2021-12-07 00:12:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:53,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:53,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:53,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:53,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-07 00:12:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:53,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:12:53,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:12:53,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:53,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:53,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329093540] [2021-12-07 00:12:53,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329093540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:53,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:53,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:12:53,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824099603] [2021-12-07 00:12:53,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:53,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:12:53,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:53,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:12:53,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:12:53,682 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-07 00:12:53,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:53,904 INFO L93 Difference]: Finished difference Result 127 states and 174 transitions. [2021-12-07 00:12:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:12:53,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2021-12-07 00:12:53,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:53,906 INFO L225 Difference]: With dead ends: 127 [2021-12-07 00:12:53,906 INFO L226 Difference]: Without dead ends: 87 [2021-12-07 00:12:53,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:12:53,907 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 56 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:53,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 522 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:12:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-07 00:12:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2021-12-07 00:12:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 54 states have internal predecessors, (70), 15 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2021-12-07 00:12:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 104 transitions. [2021-12-07 00:12:53,914 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 104 transitions. Word has length 38 [2021-12-07 00:12:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:53,915 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 104 transitions. [2021-12-07 00:12:53,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-07 00:12:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 104 transitions. [2021-12-07 00:12:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-07 00:12:53,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:53,916 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:53,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-07 00:12:54,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:54,118 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:54,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash -490349503, now seen corresponding path program 1 times [2021-12-07 00:12:54,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:54,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718195235] [2021-12-07 00:12:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:54,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:54,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:54,124 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:54,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-07 00:12:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:54,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:12:54,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:12:54,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:12:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:12:54,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:54,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718195235] [2021-12-07 00:12:54,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718195235] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:12:54,820 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:12:54,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-07 00:12:54,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234386169] [2021-12-07 00:12:54,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:12:54,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 00:12:54,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 00:12:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:12:54,821 INFO L87 Difference]: Start difference. First operand 74 states and 104 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-07 00:12:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:55,272 INFO L93 Difference]: Finished difference Result 117 states and 162 transitions. [2021-12-07 00:12:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 00:12:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 41 [2021-12-07 00:12:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:55,274 INFO L225 Difference]: With dead ends: 117 [2021-12-07 00:12:55,274 INFO L226 Difference]: Without dead ends: 115 [2021-12-07 00:12:55,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:12:55,275 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 149 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:55,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 506 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:12:55,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-12-07 00:12:55,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 84. [2021-12-07 00:12:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 20 states have call predecessors, (23), 18 states have call successors, (23) [2021-12-07 00:12:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2021-12-07 00:12:55,283 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 41 [2021-12-07 00:12:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:55,283 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2021-12-07 00:12:55,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-07 00:12:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2021-12-07 00:12:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-07 00:12:55,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:55,284 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:55,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-07 00:12:55,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:55,486 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash 38675638, now seen corresponding path program 1 times [2021-12-07 00:12:55,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:55,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701590891] [2021-12-07 00:12:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:55,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:55,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:55,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:55,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-07 00:12:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:55,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:12:55,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:12:55,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:55,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:55,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701590891] [2021-12-07 00:12:55,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701590891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:55,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:55,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:12:55,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157883318] [2021-12-07 00:12:55,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:55,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:12:55,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:12:55,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:12:55,678 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 00:12:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:55,686 INFO L93 Difference]: Finished difference Result 87 states and 122 transitions. [2021-12-07 00:12:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:12:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2021-12-07 00:12:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:55,688 INFO L225 Difference]: With dead ends: 87 [2021-12-07 00:12:55,688 INFO L226 Difference]: Without dead ends: 85 [2021-12-07 00:12:55,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:12:55,689 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:55,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:55,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-07 00:12:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-12-07 00:12:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 20 states have call predecessors, (23), 18 states have call successors, (23) [2021-12-07 00:12:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2021-12-07 00:12:55,695 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 43 [2021-12-07 00:12:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:55,695 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2021-12-07 00:12:55,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 00:12:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2021-12-07 00:12:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-07 00:12:55,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:55,696 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:55,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-07 00:12:55,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:55,898 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:55,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:55,899 INFO L85 PathProgramCache]: Analyzing trace with hash 972082008, now seen corresponding path program 1 times [2021-12-07 00:12:55,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:55,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657938178] [2021-12-07 00:12:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:55,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:55,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:55,903 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:55,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-07 00:12:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:55,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:12:55,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:12:56,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:56,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:56,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657938178] [2021-12-07 00:12:56,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657938178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:56,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:56,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:56,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477324547] [2021-12-07 00:12:56,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:56,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:12:56,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:12:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:56,022 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:12:56,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:56,034 INFO L93 Difference]: Finished difference Result 113 states and 159 transitions. [2021-12-07 00:12:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:12:56,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2021-12-07 00:12:56,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:56,035 INFO L225 Difference]: With dead ends: 113 [2021-12-07 00:12:56,035 INFO L226 Difference]: Without dead ends: 88 [2021-12-07 00:12:56,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:56,036 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:56,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-07 00:12:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-12-07 00:12:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.265625) internal successors, (81), 63 states have internal predecessors, (81), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (28), 22 states have call predecessors, (28), 18 states have call successors, (28) [2021-12-07 00:12:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 127 transitions. [2021-12-07 00:12:56,042 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 127 transitions. Word has length 46 [2021-12-07 00:12:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:56,042 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 127 transitions. [2021-12-07 00:12:56,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:12:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 127 transitions. [2021-12-07 00:12:56,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-07 00:12:56,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:56,044 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:56,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-07 00:12:56,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:56,245 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash 411048800, now seen corresponding path program 1 times [2021-12-07 00:12:56,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:56,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308777904] [2021-12-07 00:12:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:56,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:56,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:56,250 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:56,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-07 00:12:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:56,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:12:56,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:12:56,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:56,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:56,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308777904] [2021-12-07 00:12:56,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308777904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:56,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:56,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:56,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111353233] [2021-12-07 00:12:56,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:56,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:12:56,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:56,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:12:56,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:56,366 INFO L87 Difference]: Start difference. First operand 88 states and 127 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:12:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:56,392 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-12-07 00:12:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:12:56,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2021-12-07 00:12:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:56,393 INFO L225 Difference]: With dead ends: 117 [2021-12-07 00:12:56,393 INFO L226 Difference]: Without dead ends: 92 [2021-12-07 00:12:56,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:56,394 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:56,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-07 00:12:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2021-12-07 00:12:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.265625) internal successors, (81), 63 states have internal predecessors, (81), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (28), 22 states have call predecessors, (28), 18 states have call successors, (28) [2021-12-07 00:12:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 127 transitions. [2021-12-07 00:12:56,403 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 127 transitions. Word has length 47 [2021-12-07 00:12:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:56,404 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 127 transitions. [2021-12-07 00:12:56,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:12:56,404 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 127 transitions. [2021-12-07 00:12:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-07 00:12:56,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:56,405 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:56,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-07 00:12:56,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:56,606 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:56,607 INFO L85 PathProgramCache]: Analyzing trace with hash -877982242, now seen corresponding path program 1 times [2021-12-07 00:12:56,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:56,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833203227] [2021-12-07 00:12:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:56,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:56,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:56,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:56,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-07 00:12:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:56,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:12:56,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:12:56,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:12:56,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:56,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833203227] [2021-12-07 00:12:56,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833203227] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:12:56,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [353971550] [2021-12-07 00:12:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:56,912 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-07 00:12:56,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-07 00:12:56,912 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-07 00:12:56,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-12-07 00:12:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:57,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:12:57,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:12:57,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:12:57,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [353971550] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:12:57,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:12:57,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-12-07 00:12:57,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194406610] [2021-12-07 00:12:57,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:12:57,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:12:57,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:57,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:12:57,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:12:57,234 INFO L87 Difference]: Start difference. First operand 88 states and 127 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-07 00:12:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:57,466 INFO L93 Difference]: Finished difference Result 123 states and 168 transitions. [2021-12-07 00:12:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:12:57,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 48 [2021-12-07 00:12:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:57,468 INFO L225 Difference]: With dead ends: 123 [2021-12-07 00:12:57,468 INFO L226 Difference]: Without dead ends: 102 [2021-12-07 00:12:57,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:12:57,469 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 68 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:57,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 333 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:12:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-07 00:12:57,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2021-12-07 00:12:57,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.25) internal successors, (80), 63 states have internal predecessors, (80), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (28), 22 states have call predecessors, (28), 18 states have call successors, (28) [2021-12-07 00:12:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2021-12-07 00:12:57,474 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 48 [2021-12-07 00:12:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:57,475 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2021-12-07 00:12:57,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-07 00:12:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2021-12-07 00:12:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-07 00:12:57,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:57,476 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:57,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-12-07 00:12:57,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-07 00:12:57,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:57,877 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1899050596, now seen corresponding path program 1 times [2021-12-07 00:12:57,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:57,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126727402] [2021-12-07 00:12:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:57,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:57,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:57,883 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:57,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-07 00:12:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:57,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-07 00:12:57,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-07 00:12:58,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:58,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:58,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126727402] [2021-12-07 00:12:58,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126727402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:58,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:58,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:12:58,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314154747] [2021-12-07 00:12:58,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:58,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:12:58,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:58,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:12:58,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:12:58,365 INFO L87 Difference]: Start difference. First operand 88 states and 126 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-07 00:12:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:59,146 INFO L93 Difference]: Finished difference Result 137 states and 191 transitions. [2021-12-07 00:12:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:12:59,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2021-12-07 00:12:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:59,148 INFO L225 Difference]: With dead ends: 137 [2021-12-07 00:12:59,148 INFO L226 Difference]: Without dead ends: 135 [2021-12-07 00:12:59,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:12:59,148 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 91 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:59,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 560 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:12:59,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-07 00:12:59,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 100. [2021-12-07 00:12:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 72 states have internal predecessors, (92), 19 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (34), 25 states have call predecessors, (34), 19 states have call successors, (34) [2021-12-07 00:12:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 145 transitions. [2021-12-07 00:12:59,155 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 145 transitions. Word has length 48 [2021-12-07 00:12:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:59,155 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 145 transitions. [2021-12-07 00:12:59,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-07 00:12:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 145 transitions. [2021-12-07 00:12:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-07 00:12:59,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:59,156 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:59,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-07 00:12:59,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:59,357 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:59,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:59,359 INFO L85 PathProgramCache]: Analyzing trace with hash 505566420, now seen corresponding path program 1 times [2021-12-07 00:12:59,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:59,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541614119] [2021-12-07 00:12:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:59,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:59,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:59,363 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:59,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-07 00:12:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:59,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:12:59,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:12:59,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:12:59,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:12:59,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541614119] [2021-12-07 00:12:59,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541614119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:59,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:59,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:59,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267938001] [2021-12-07 00:12:59,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:59,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:12:59,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:12:59,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:12:59,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:59,454 INFO L87 Difference]: Start difference. First operand 100 states and 145 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:12:59,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:59,579 INFO L93 Difference]: Finished difference Result 129 states and 185 transitions. [2021-12-07 00:12:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:12:59,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2021-12-07 00:12:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:59,580 INFO L225 Difference]: With dead ends: 129 [2021-12-07 00:12:59,580 INFO L226 Difference]: Without dead ends: 104 [2021-12-07 00:12:59,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:12:59,581 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:59,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:12:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-07 00:12:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2021-12-07 00:12:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 72 states have internal predecessors, (92), 19 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (34), 25 states have call predecessors, (34), 19 states have call successors, (34) [2021-12-07 00:12:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 145 transitions. [2021-12-07 00:12:59,587 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 145 transitions. Word has length 48 [2021-12-07 00:12:59,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:59,587 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 145 transitions. [2021-12-07 00:12:59,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:12:59,587 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 145 transitions. [2021-12-07 00:12:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-07 00:12:59,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:59,588 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:59,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-07 00:12:59,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:12:59,791 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1437385679, now seen corresponding path program 1 times [2021-12-07 00:12:59,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:12:59,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481990397] [2021-12-07 00:12:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:59,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:12:59,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:12:59,793 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:12:59,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-07 00:12:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:59,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:12:59,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:12:59,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:13:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 00:13:00,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:00,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481990397] [2021-12-07 00:13:00,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481990397] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:13:00,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:13:00,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-12-07 00:13:00,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923190871] [2021-12-07 00:13:00,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:13:00,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 00:13:00,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:00,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 00:13:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:13:00,151 INFO L87 Difference]: Start difference. First operand 100 states and 145 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 00:13:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:00,455 INFO L93 Difference]: Finished difference Result 122 states and 170 transitions. [2021-12-07 00:13:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:13:00,455 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2021-12-07 00:13:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:00,456 INFO L225 Difference]: With dead ends: 122 [2021-12-07 00:13:00,456 INFO L226 Difference]: Without dead ends: 99 [2021-12-07 00:13:00,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:13:00,457 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 86 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:00,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 466 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:13:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-07 00:13:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2021-12-07 00:13:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 69 states have internal predecessors, (85), 19 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (33), 23 states have call predecessors, (33), 19 states have call successors, (33) [2021-12-07 00:13:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2021-12-07 00:13:00,464 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 48 [2021-12-07 00:13:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:00,464 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2021-12-07 00:13:00,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 00:13:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2021-12-07 00:13:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-07 00:13:00,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:00,465 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:00,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-07 00:13:00,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:00,666 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:00,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1803392071, now seen corresponding path program 1 times [2021-12-07 00:13:00,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:00,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373960105] [2021-12-07 00:13:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:00,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:00,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:00,671 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:00,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-07 00:13:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:00,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:13:00,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 00:13:00,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:13:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 00:13:01,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:01,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373960105] [2021-12-07 00:13:01,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373960105] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:13:01,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:13:01,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-12-07 00:13:01,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015578781] [2021-12-07 00:13:01,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:13:01,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 00:13:01,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 00:13:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:13:01,238 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:13:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:01,689 INFO L93 Difference]: Finished difference Result 133 states and 178 transitions. [2021-12-07 00:13:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 00:13:01,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) Word has length 48 [2021-12-07 00:13:01,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:01,690 INFO L225 Difference]: With dead ends: 133 [2021-12-07 00:13:01,690 INFO L226 Difference]: Without dead ends: 89 [2021-12-07 00:13:01,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:13:01,691 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 48 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:01,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 564 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:13:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-07 00:13:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2021-12-07 00:13:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 63 states have internal predecessors, (76), 16 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (27), 20 states have call predecessors, (27), 16 states have call successors, (27) [2021-12-07 00:13:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 119 transitions. [2021-12-07 00:13:01,698 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 119 transitions. Word has length 48 [2021-12-07 00:13:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:01,699 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 119 transitions. [2021-12-07 00:13:01,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:13:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 119 transitions. [2021-12-07 00:13:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-07 00:13:01,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:01,700 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:01,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-07 00:13:01,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:01,901 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:01,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:01,903 INFO L85 PathProgramCache]: Analyzing trace with hash -495361713, now seen corresponding path program 1 times [2021-12-07 00:13:01,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:01,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526287820] [2021-12-07 00:13:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:01,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:01,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:01,907 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:01,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-07 00:13:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:01,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:13:01,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:13:02,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:13:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 00:13:02,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:02,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526287820] [2021-12-07 00:13:02,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526287820] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:13:02,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:13:02,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-12-07 00:13:02,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016375169] [2021-12-07 00:13:02,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:13:02,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:13:02,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:13:02,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:13:02,319 INFO L87 Difference]: Start difference. First operand 86 states and 119 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-07 00:13:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:02,499 INFO L93 Difference]: Finished difference Result 101 states and 133 transitions. [2021-12-07 00:13:02,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:13:02,500 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 48 [2021-12-07 00:13:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:02,501 INFO L225 Difference]: With dead ends: 101 [2021-12-07 00:13:02,501 INFO L226 Difference]: Without dead ends: 82 [2021-12-07 00:13:02,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:13:02,502 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 48 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:02,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 529 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:13:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-07 00:13:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2021-12-07 00:13:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 55 states have internal predecessors, (63), 13 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (24), 16 states have call predecessors, (24), 13 states have call successors, (24) [2021-12-07 00:13:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 100 transitions. [2021-12-07 00:13:02,508 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 100 transitions. Word has length 48 [2021-12-07 00:13:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:02,508 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 100 transitions. [2021-12-07 00:13:02,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-07 00:13:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 100 transitions. [2021-12-07 00:13:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-07 00:13:02,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:02,509 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:02,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-07 00:13:02,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:02,711 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:02,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash 113915812, now seen corresponding path program 1 times [2021-12-07 00:13:02,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:02,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498853511] [2021-12-07 00:13:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:02,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:02,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:02,716 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:02,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-07 00:13:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:02,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:13:02,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:13:03,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:13:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:13:03,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:03,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498853511] [2021-12-07 00:13:03,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498853511] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:13:03,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:13:03,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-07 00:13:03,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000369023] [2021-12-07 00:13:03,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:13:03,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-07 00:13:03,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-07 00:13:03,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:13:03,547 INFO L87 Difference]: Start difference. First operand 74 states and 100 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-07 00:13:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:03,968 INFO L93 Difference]: Finished difference Result 84 states and 111 transitions. [2021-12-07 00:13:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:13:03,968 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 49 [2021-12-07 00:13:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:03,969 INFO L225 Difference]: With dead ends: 84 [2021-12-07 00:13:03,969 INFO L226 Difference]: Without dead ends: 72 [2021-12-07 00:13:03,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2021-12-07 00:13:03,970 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 81 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:03,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 330 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:13:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-07 00:13:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2021-12-07 00:13:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.16) internal successors, (58), 51 states have internal predecessors, (58), 13 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (20), 15 states have call predecessors, (20), 13 states have call successors, (20) [2021-12-07 00:13:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2021-12-07 00:13:03,974 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 49 [2021-12-07 00:13:03,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:03,974 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2021-12-07 00:13:03,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-07 00:13:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2021-12-07 00:13:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-07 00:13:03,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:03,975 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:03,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-07 00:13:04,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:04,176 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:04,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:04,178 INFO L85 PathProgramCache]: Analyzing trace with hash -552676772, now seen corresponding path program 1 times [2021-12-07 00:13:04,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:04,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632946931] [2021-12-07 00:13:04,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:04,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:04,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:04,182 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:04,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-07 00:13:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:04,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:13:04,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:13:04,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:13:04,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:04,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632946931] [2021-12-07 00:13:04,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632946931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:13:04,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:13:04,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:13:04,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494018997] [2021-12-07 00:13:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:13:04,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:13:04,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:13:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:13:04,269 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:13:04,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:04,279 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2021-12-07 00:13:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:13:04,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2021-12-07 00:13:04,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:04,280 INFO L225 Difference]: With dead ends: 96 [2021-12-07 00:13:04,280 INFO L226 Difference]: Without dead ends: 70 [2021-12-07 00:13:04,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:13:04,280 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:04,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:13:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-07 00:13:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-12-07 00:13:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2021-12-07 00:13:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2021-12-07 00:13:04,284 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 49 [2021-12-07 00:13:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:04,284 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2021-12-07 00:13:04,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 00:13:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2021-12-07 00:13:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-07 00:13:04,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:04,285 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:04,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-07 00:13:04,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:04,486 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1549749125, now seen corresponding path program 1 times [2021-12-07 00:13:04,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:04,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274351626] [2021-12-07 00:13:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:04,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:04,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:04,491 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:04,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-07 00:13:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:04,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-07 00:13:04,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:13:05,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:13:05,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:05,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274351626] [2021-12-07 00:13:05,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274351626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:13:05,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:13:05,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-07 00:13:05,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041518759] [2021-12-07 00:13:05,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:13:05,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 00:13:05,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:05,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 00:13:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:13:05,165 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-07 00:13:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:06,408 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2021-12-07 00:13:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:13:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2021-12-07 00:13:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:06,409 INFO L225 Difference]: With dead ends: 90 [2021-12-07 00:13:06,409 INFO L226 Difference]: Without dead ends: 69 [2021-12-07 00:13:06,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:13:06,410 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 42 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:06,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 607 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 378 Invalid, 0 Unknown, 36 Unchecked, 1.0s Time] [2021-12-07 00:13:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-07 00:13:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 49. [2021-12-07 00:13:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 36 states have internal predecessors, (44), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-07 00:13:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2021-12-07 00:13:06,413 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 49 [2021-12-07 00:13:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:06,413 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2021-12-07 00:13:06,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-07 00:13:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2021-12-07 00:13:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-07 00:13:06,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:06,414 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:06,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-07 00:13:06,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:06,616 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1451512262, now seen corresponding path program 1 times [2021-12-07 00:13:06,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:06,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014511655] [2021-12-07 00:13:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:06,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:06,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:06,621 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:06,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-07 00:13:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:06,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 00:13:06,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:13:07,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:13:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-07 00:13:08,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:08,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014511655] [2021-12-07 00:13:08,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014511655] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:13:08,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:13:08,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-12-07 00:13:08,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656847055] [2021-12-07 00:13:08,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:13:08,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-07 00:13:08,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:08,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-07 00:13:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:13:08,286 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-07 00:13:08,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:08,830 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2021-12-07 00:13:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:13:08,831 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 55 [2021-12-07 00:13:08,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:08,831 INFO L225 Difference]: With dead ends: 88 [2021-12-07 00:13:08,831 INFO L226 Difference]: Without dead ends: 55 [2021-12-07 00:13:08,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2021-12-07 00:13:08,832 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 131 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:08,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 289 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 274 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2021-12-07 00:13:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-07 00:13:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2021-12-07 00:13:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-07 00:13:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2021-12-07 00:13:08,835 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 55 [2021-12-07 00:13:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:08,835 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2021-12-07 00:13:08,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-07 00:13:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2021-12-07 00:13:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 00:13:08,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:08,836 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:08,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-07 00:13:09,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:09,038 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:09,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2059347801, now seen corresponding path program 1 times [2021-12-07 00:13:09,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:09,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136388676] [2021-12-07 00:13:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:09,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:09,042 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:09,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-07 00:13:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:09,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:13:09,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-07 00:13:09,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:13:09,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:09,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136388676] [2021-12-07 00:13:09,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136388676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:13:09,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:13:09,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:13:09,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976962902] [2021-12-07 00:13:09,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:13:09,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:13:09,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:09,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:13:09,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:13:09,229 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:09,336 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2021-12-07 00:13:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:13:09,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2021-12-07 00:13:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:09,336 INFO L225 Difference]: With dead ends: 65 [2021-12-07 00:13:09,337 INFO L226 Difference]: Without dead ends: 48 [2021-12-07 00:13:09,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:13:09,337 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 15 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:09,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 237 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:13:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-07 00:13:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-12-07 00:13:09,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-07 00:13:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2021-12-07 00:13:09,340 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2021-12-07 00:13:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:09,340 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2021-12-07 00:13:09,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2021-12-07 00:13:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 00:13:09,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:09,341 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:09,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-07 00:13:09,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:09,542 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:09,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash 253909467, now seen corresponding path program 1 times [2021-12-07 00:13:09,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:09,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073257728] [2021-12-07 00:13:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:09,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:09,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:09,547 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:09,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-07 00:13:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:09,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:13:09,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:13:09,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:13:09,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:09,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073257728] [2021-12-07 00:13:09,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073257728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:13:09,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:13:09,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:13:09,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830823316] [2021-12-07 00:13:09,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:13:09,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:13:09,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:13:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:13:09,787 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:10,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:10,104 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2021-12-07 00:13:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:13:10,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2021-12-07 00:13:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:10,105 INFO L225 Difference]: With dead ends: 69 [2021-12-07 00:13:10,105 INFO L226 Difference]: Without dead ends: 50 [2021-12-07 00:13:10,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:13:10,106 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 38 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:10,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 262 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:13:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-07 00:13:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-07 00:13:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.135135135135135) internal successors, (42), 38 states have internal predecessors, (42), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-07 00:13:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-12-07 00:13:10,109 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 62 [2021-12-07 00:13:10,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:10,109 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-12-07 00:13:10,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-12-07 00:13:10,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-07 00:13:10,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:10,110 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:10,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-07 00:13:10,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:10,311 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:10,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash 647887735, now seen corresponding path program 1 times [2021-12-07 00:13:10,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:10,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806336213] [2021-12-07 00:13:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:10,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:10,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:10,316 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:10,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-07 00:13:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:10,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:13:10,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:13:10,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:13:10,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:10,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806336213] [2021-12-07 00:13:10,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806336213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:13:10,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:13:10,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:13:10,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614890747] [2021-12-07 00:13:10,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:13:10,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:13:10,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:10,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:13:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:13:10,696 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:11,106 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2021-12-07 00:13:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:13:11,107 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2021-12-07 00:13:11,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:11,107 INFO L225 Difference]: With dead ends: 71 [2021-12-07 00:13:11,107 INFO L226 Difference]: Without dead ends: 52 [2021-12-07 00:13:11,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:13:11,108 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 35 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:11,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 268 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 24 Unchecked, 0.3s Time] [2021-12-07 00:13:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-07 00:13:11,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-12-07 00:13:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.135135135135135) internal successors, (42), 38 states have internal predecessors, (42), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-07 00:13:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-12-07 00:13:11,110 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 63 [2021-12-07 00:13:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:11,111 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-12-07 00:13:11,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-12-07 00:13:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-07 00:13:11,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:11,111 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:11,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-07 00:13:11,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:11,313 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash -589254976, now seen corresponding path program 1 times [2021-12-07 00:13:11,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:11,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497765677] [2021-12-07 00:13:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:11,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:11,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:11,316 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:11,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-07 00:13:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:11,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:13:11,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-07 00:13:11,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:13:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-07 00:13:12,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:12,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497765677] [2021-12-07 00:13:12,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497765677] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:13:12,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:13:12,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-07 00:13:12,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825404384] [2021-12-07 00:13:12,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:13:12,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 00:13:12,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:12,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 00:13:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:13:12,094 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 15 states, 13 states have (on average 4.0) internal successors, (52), 15 states have internal predecessors, (52), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2021-12-07 00:13:12,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:12,515 INFO L93 Difference]: Finished difference Result 84 states and 101 transitions. [2021-12-07 00:13:12,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:13:12,516 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 15 states have internal predecessors, (52), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) Word has length 63 [2021-12-07 00:13:12,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:12,516 INFO L225 Difference]: With dead ends: 84 [2021-12-07 00:13:12,516 INFO L226 Difference]: Without dead ends: 71 [2021-12-07 00:13:12,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:13:12,517 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 72 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:12,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 603 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:13:12,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-07 00:13:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2021-12-07 00:13:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 41 states have internal predecessors, (44), 9 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-07 00:13:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2021-12-07 00:13:12,520 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 63 [2021-12-07 00:13:12,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:12,521 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2021-12-07 00:13:12,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 15 states have internal predecessors, (52), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2021-12-07 00:13:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2021-12-07 00:13:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-07 00:13:12,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:12,521 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:12,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-07 00:13:12,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:12,722 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:12,723 INFO L85 PathProgramCache]: Analyzing trace with hash -472199073, now seen corresponding path program 1 times [2021-12-07 00:13:12,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:12,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248074931] [2021-12-07 00:13:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:12,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:12,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:12,728 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:12,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-07 00:13:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:12,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:13:12,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:13:13,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:13:13,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:13,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248074931] [2021-12-07 00:13:13,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248074931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:13:13,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:13:13,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:13:13,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999251083] [2021-12-07 00:13:13,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:13:13,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:13:13,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:13:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:13:13,036 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:14,427 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2021-12-07 00:13:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:13:14,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2021-12-07 00:13:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:14,428 INFO L225 Difference]: With dead ends: 75 [2021-12-07 00:13:14,428 INFO L226 Difference]: Without dead ends: 56 [2021-12-07 00:13:14,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:13:14,429 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:14,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 268 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 24 Unchecked, 1.3s Time] [2021-12-07 00:13:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-07 00:13:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2021-12-07 00:13:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 41 states have internal predecessors, (44), 9 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-07 00:13:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2021-12-07 00:13:14,432 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 64 [2021-12-07 00:13:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:14,432 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2021-12-07 00:13:14,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2021-12-07 00:13:14,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-07 00:13:14,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:14,432 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:14,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-12-07 00:13:14,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:14,634 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1512938488, now seen corresponding path program 1 times [2021-12-07 00:13:14,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:14,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173558386] [2021-12-07 00:13:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:14,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:14,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:14,638 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:14,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-07 00:13:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:14,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:13:14,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-07 00:13:15,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:13:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-07 00:13:15,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:15,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173558386] [2021-12-07 00:13:15,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173558386] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:13:15,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:13:15,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-07 00:13:15,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797542580] [2021-12-07 00:13:15,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:13:15,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 00:13:15,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:15,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 00:13:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:13:15,363 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 13 states have internal predecessors, (50), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-07 00:13:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:15,572 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2021-12-07 00:13:15,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:13:15,572 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 13 states have internal predecessors, (50), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 64 [2021-12-07 00:13:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:15,573 INFO L225 Difference]: With dead ends: 68 [2021-12-07 00:13:15,573 INFO L226 Difference]: Without dead ends: 55 [2021-12-07 00:13:15,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:13:15,574 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 112 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:15,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 258 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:13:15,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-07 00:13:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2021-12-07 00:13:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 38 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-07 00:13:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-12-07 00:13:15,577 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 64 [2021-12-07 00:13:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:15,577 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-12-07 00:13:15,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 13 states have internal predecessors, (50), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-07 00:13:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-12-07 00:13:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-07 00:13:15,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:15,578 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:15,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-07 00:13:15,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:15,779 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:15,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:15,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1283662981, now seen corresponding path program 1 times [2021-12-07 00:13:15,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:15,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720066313] [2021-12-07 00:13:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:15,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:15,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:15,784 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:15,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-07 00:13:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:15,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:13:15,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:13:16,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:13:16,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:16,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720066313] [2021-12-07 00:13:16,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720066313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:13:16,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:13:16,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:13:16,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270845206] [2021-12-07 00:13:16,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:13:16,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:13:16,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:13:16,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:13:16,102 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:16,709 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-12-07 00:13:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:13:16,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2021-12-07 00:13:16,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:16,710 INFO L225 Difference]: With dead ends: 68 [2021-12-07 00:13:16,710 INFO L226 Difference]: Without dead ends: 49 [2021-12-07 00:13:16,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:13:16,711 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:16,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 260 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:13:16,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-07 00:13:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-12-07 00:13:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 00:13:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-12-07 00:13:16,713 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 65 [2021-12-07 00:13:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:16,713 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-12-07 00:13:16,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-07 00:13:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-12-07 00:13:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-07 00:13:16,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:13:16,714 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:16,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-07 00:13:16,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:16,915 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:13:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:13:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash -322048964, now seen corresponding path program 1 times [2021-12-07 00:13:16,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:13:16,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216824792] [2021-12-07 00:13:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:13:16,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:13:16,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:13:16,921 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:13:16,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-07 00:13:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:13:16,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:13:16,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:13:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 00:13:17,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:13:17,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:13:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216824792] [2021-12-07 00:13:17,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216824792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:13:17,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:13:17,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:13:17,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327901642] [2021-12-07 00:13:17,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:13:17,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:13:17,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:13:17,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:13:17,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:13:17,029 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 00:13:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:13:17,034 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2021-12-07 00:13:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:13:17,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2021-12-07 00:13:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:17,035 INFO L225 Difference]: With dead ends: 50 [2021-12-07 00:13:17,035 INFO L226 Difference]: Without dead ends: 0 [2021-12-07 00:13:17,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:13:17,036 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:17,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:13:17,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-07 00:13:17,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-07 00:13:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:13:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 00:13:17,037 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2021-12-07 00:13:17,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:13:17,037 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:13:17,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 00:13:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-07 00:13:17,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-07 00:13:17,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-07 00:13:17,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-07 00:13:17,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-12-07 00:13:17,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:13:17,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-07 00:13:17,987 INFO L858 garLoopResultBuilder]: For program point isnan_floatFINAL(line 59) no Hoare annotation was computed. [2021-12-07 00:13:17,987 INFO L861 garLoopResultBuilder]: At program point isnan_floatENTRY(line 59) the Hoare annotation is: true [2021-12-07 00:13:17,987 INFO L858 garLoopResultBuilder]: For program point isnan_floatEXIT(line 59) no Hoare annotation was computed. [2021-12-07 00:13:17,987 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2021-12-07 00:13:17,987 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L854 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|))) (or (and (not .cse0) .cse1 .cse2 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) .cse1 (not .cse2) .cse0))) [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 40 41) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L854 garLoopResultBuilder]: At program point L82(line 82) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|))) (or (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) .cse0 (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and .cse0 (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))))) [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point L82-1(line 82) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point L82-2(line 82) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L854 garLoopResultBuilder]: At program point L82-3(line 82) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point L82-4(line 82) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point L82-6(lines 82 85) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L861 garLoopResultBuilder]: At program point L70(line 70) the Hoare annotation is: true [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2021-12-07 00:13:17,988 INFO L858 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L854 garLoopResultBuilder]: At program point L70-3(line 70) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short13#1| (= |ULTIMATE.start_main_#t~ret11#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L70-7(lines 70 71) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L70-9(lines 70 86) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L70-11(lines 70 86) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L854 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (not |ULTIMATE.start_main_#t~short17#1|)) (.cse2 (not |ULTIMATE.start_main_#t~short13#1|))) (or (and (= |ULTIMATE.start_main_#t~ret11#1| (_ bv0 32)) .cse0 .cse1 .cse2) (and (= |ULTIMATE.start_main_#t~ret12#1| (_ bv1 32)) (= |ULTIMATE.start_main_#t~ret11#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (not .cse0) .cse1 .cse2))) [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L71-1(line 71) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|))) (or (and (not .cse0) .cse1 .cse2 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) .cse1 (not .cse2) .cse0))) [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2021-12-07 00:13:17,989 INFO L854 garLoopResultBuilder]: At program point L71-3(line 71) the Hoare annotation is: (and (= |ULTIMATE.start_main_#t~ret11#1| (_ bv0 32)) (= |ULTIMATE.start_main_#t~ret14#1| (_ bv0 32)) |ULTIMATE.start_main_#t~short16#1| (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|) (not |ULTIMATE.start_main_#t~short17#1|) (not |ULTIMATE.start_main_#t~short13#1|)) [2021-12-07 00:13:17,989 INFO L858 garLoopResultBuilder]: For program point L71-4(line 71) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L71-6(line 71) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L861 garLoopResultBuilder]: At program point L88(lines 61 89) the Hoare annotation is: true [2021-12-07 00:13:17,990 INFO L854 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) .cse0 (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse1 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) .cse0 (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) (not .cse1) (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L76-2(line 76) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L854 garLoopResultBuilder]: At program point L76-3(line 76) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_#t~short21#1| (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) [2021-12-07 00:13:17,990 INFO L854 garLoopResultBuilder]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) .cse0 (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse1 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) .cse0 (not .cse1) (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L76-4(line 76) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L76-6(lines 76 79) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 14 35) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-12-07 00:13:17,990 INFO L858 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-12-07 00:13:17,991 INFO L854 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2021-12-07 00:13:17,991 INFO L858 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-12-07 00:13:17,991 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-12-07 00:13:17,991 INFO L861 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 14 35) the Hoare annotation is: true [2021-12-07 00:13:17,991 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 14 35) no Hoare annotation was computed. [2021-12-07 00:13:17,993 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:13:17,994 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:13:18,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:13:18 BoogieIcfgContainer [2021-12-07 00:13:18,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:13:18,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:13:18,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:13:18,004 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:13:18,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:12:49" (3/4) ... [2021-12-07 00:13:18,006 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-07 00:13:18,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2021-12-07 00:13:18,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2021-12-07 00:13:18,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-12-07 00:13:18,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-12-07 00:13:18,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-07 00:13:18,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-07 00:13:18,031 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2021-12-07 00:13:18,032 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(y, y) && y == y) && \result == x) && ~fp.eq~FLOAT(x, x)) && x == x) || ((((\result == y && !~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) [2021-12-07 00:13:18,043 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:13:18,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:13:18,044 INFO L158 Benchmark]: Toolchain (without parser) took 28745.14ms. Allocated memory was 52.4MB in the beginning and 83.9MB in the end (delta: 31.5MB). Free memory was 28.8MB in the beginning and 52.9MB in the end (delta: -24.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-12-07 00:13:18,044 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory is still 33.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:13:18,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.13ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.6MB in the beginning and 51.5MB in the end (delta: -22.9MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-12-07 00:13:18,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.24ms. Allocated memory is still 69.2MB. Free memory was 51.4MB in the beginning and 49.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:13:18,045 INFO L158 Benchmark]: Boogie Preprocessor took 30.35ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 48.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:13:18,045 INFO L158 Benchmark]: RCFGBuilder took 292.41ms. Allocated memory is still 69.2MB. Free memory was 48.2MB in the beginning and 35.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-07 00:13:18,045 INFO L158 Benchmark]: TraceAbstraction took 28140.86ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 35.2MB in the beginning and 57.1MB in the end (delta: -21.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-12-07 00:13:18,046 INFO L158 Benchmark]: Witness Printer took 40.36ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 52.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-07 00:13:18,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory is still 33.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.13ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.6MB in the beginning and 51.5MB in the end (delta: -22.9MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.24ms. Allocated memory is still 69.2MB. Free memory was 51.4MB in the beginning and 49.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.35ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 48.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 292.41ms. Allocated memory is still 69.2MB. Free memory was 48.2MB in the beginning and 35.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 28140.86ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 35.2MB in the beginning and 57.1MB in the end (delta: -21.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Witness Printer took 40.36ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 52.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 83]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 28.1s, OverallIterations: 30, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1332 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1257 mSDsluCounter, 9686 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 113 IncrementalHoareTripleChecker+Unchecked, 7868 mSDsCounter, 334 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3629 IncrementalHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 334 mSolverCounterUnsat, 1818 mSDtfsCounter, 3629 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2044 GetRequests, 1738 SyntacticMatches, 2 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=14, InterpolantAutomatonStates: 243, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 30 MinimizatonAttempts, 209 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 137 PreInvPairs, 163 NumberOfFragments, 264 HoareAnnotationTreeSize, 137 FomulaSimplifications, 1064 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1513 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 1490 NumberOfCodeBlocks, 1490 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1902 ConstructedInterpolants, 9 QuantifiedInterpolants, 5681 SizeOfPredicates, 152 NumberOfNonLiveVariables, 3436 ConjunctsInSsa, 301 ConjunctsInUnsatCore, 40 InterpolantComputations, 20 PerfectInterpolantSequences, 1033/1145 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(y, y) && y == y) && \result == x) && ~fp.eq~FLOAT(x, x)) && x == x) || ((((\result == y && !~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) RESULT: Ultimate proved your program to be correct! [2021-12-07 00:13:18,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10726804-ce1d-4f86-a07f-a07831672f81/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE